Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-02-02
2010-02-16
Maung, Nay A (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S432100, C455S456100, C370S335000
Reexamination Certificate
active
07664524
ABSTRACT:
The invention provides a mobile communication terminal that allows the time for recognizing the scrambling code to be shortened.The mobile communication terminal predicts the scrambling code to be searched at the next time by collating the previous result of GPS information process and the stored content of a position information database in a control part, if establishment of slot synchronization is completed employing a slot synchronization part. The control part acquires the information required for inverse spreading of the predicted scrambling code from a memory, and generates a code for inverse spreading. A predicted scrambling code recognition part inputs the code for inverse spreading shifted in a unit of slot from the control part, and attempts inverse spreading. The control part suspends a normal three-stage cell search that is performed in parallel with the cell search of the invention, if prediction from the position information is determined to be correct in the predicted scrambling code recognition part.
REFERENCES:
patent: 6546258 (2003-04-01), Nohara et al.
patent: 2005/0239459 (2005-10-01), Katoh
patent: 2001-061176 (2001-03-01), None
patent: 2003-134569 (2003-05-01), None
patent: 2003-199137 (2003-07-01), None
patent: 2003-283371 (2003-10-01), None
Maung Nay A
NEC Corporation
Perez Angelica M
Scully , Scott, Murphy & Presser, P.C.
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